One screen to view ALL sites a user has access to?

One screen to view ALL sites a user has access to?

I am finding it extremely difficult to perform a simple task - I need to know all sites across all site collections (without having to select each one) that a user has been granted access to, whether it is via direct permissions or inside a SP group.   NOT via the 'Everyone' scenario.  I found one report [?] I thought was going to work but it just returns a list of the user's account over & over with no actual sites listed...